Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 2,369,097	$ 2,448,510	$ 2,453,038	$ 2,220,645	$ 2,182,566	$ 2,294,139	$ 2,310,336	$ 2,172,046	$ 9,491,290	$ 8,959,087	$ 8,071,563
Gross profit	753,624	783,301	779,136	680,353	690,999	726,559	755,588	639,679	2,996,414	2,812,825	2,410,686
Net income	$ 240,378	$ 270,025	$ 260,681	$ 200,554	$ 233,748	$ 269,878	$ 255,188	$ 171,548	$ 971,638	$ 930,362	$ 615,302
Basic earnings per share (usd per share)	$ 3.23	$ 3.63	$ 3.51	$ 2.70	$ 3.15	$ 3.64	$ 3.44	$ 2.32	$ 13.07	$ 12.55	$ 8.37
Diluted earnings per share (usd per share)	$ 3.21	$ 3.61	$ 3.48	$ 2.68	$ 3.13	$ 3.62	$ 3.42	$ 2.30	$ 12.98	$ 12.48	$ 8.31